Digital mixer



FIG. 1 is a perspective view of the front, top and right side of a digital mixer showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown are included for the purpose of illustrating the portions of the digital mixer that form no part of the claimed design. 

CLAIM The ornamental design for a digital mixer, as shown and described. 